Rajobigguy
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My take on it is that a carb, no matter how good is nothing more than a controlled fuel leak. A well set up one can do a pretty fair job of leaking the right amount of fuel but can never mimic what a true mass air efi can accomplish.
Yes efi can be complicated in design but doesn't have to be for the end user. If you think of your engine as a large positive displacement air pump (which is precisely what it is) then the things that you need to know is how much air it will move at any given RPM, what the potential for air ingestion is at that RPM given the engine displacement vs the throttle opening (load) and a few other variables like IAT and engine temp. and from there the fuel map is pretty easy to draw up with only minor changes. Systems that use O2 sensors as a means of "auto-tuning" are way behind the curve. O2 sensors shouldn't be used to adjust fuel flow they are really only a report card for the computer to let it know that things are working the way they were set up to work.
Yes efi can be complicated in design but doesn't have to be for the end user. If you think of your engine as a large positive displacement air pump (which is precisely what it is) then the things that you need to know is how much air it will move at any given RPM, what the potential for air ingestion is at that RPM given the engine displacement vs the throttle opening (load) and a few other variables like IAT and engine temp. and from there the fuel map is pretty easy to draw up with only minor changes. Systems that use O2 sensors as a means of "auto-tuning" are way behind the curve. O2 sensors shouldn't be used to adjust fuel flow they are really only a report card for the computer to let it know that things are working the way they were set up to work.